Roadway.



E. F. KAMMER.

ROADWAY.

APPLICATION FILED MAY I1, I9I5.

1,166,651. Patented De@.28,1915.

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HHHQHHJ EMMETT F. KAMMER, OF TACOMA, WASHINGTON.

ROADWAY.

Application led May 17, 1915.

.To all whom t may concern.'

Be it known that I, EMMETT F. KAMMER, a citizen of the United States,residing at Tacoma, in the county of Pierce and State of Washington,have invented certain new and useful Improvements in Roadways, of whichthe following is a specification.

rlhis invention has relation to roadways, pavements and the like, thepurpose being the provision of a roadway which will maintain the surfacewithout sinking and which may be repaired at a comparatively small cost.

The invention consists of a roadway or pavement having a metallic basewhich is provided upon its upper side with a confining rim or flange,and surfacing material placed upon the base and within the confiningflange or rim.

A further purpose of the invention is the provision of a roadwayparticularly adapted for such thoroughfares provided with car tracks,whereby a proper road surface is maintained between the rails and aproper distance at the sides of the track.

Wvith these and other objects in view, which will readily appear as thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly claimed.

In the accompanying drawings has been illustrated a simple and preferredform of the invention, it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theinvention as claimed may be resorted to when desired.

Referring to the drawings Figure 1 is a transverse section of a roadwayembodying the invention; and Fig. 2 is a top plan view thereof.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the accompanying drawingsby the same reference characters.

In accordance with the invention, a base is provided and placed upon asuitably prepared bed, such base being formed upon its upper side with arim or flange which encloses a space in which surfacing material of anynature is placed. The base may be provided in any number of sections butthe several sections are substantially the `S21-111e Specification ofLetters Patent.

Patented Dec. 28, 19.15.

Serial No. 28,654.

in construction. The provision of the base in sections is a matter ofconvenience of handling and constructing. As indicated in the drawings,the base comprises a middle section 1 and side sections Q and The middlesection 1 is approximately square, whereas the side sections are oblong,but the several sections are of similar formation, each consisting of abase and an upstanding rim or flange 4 which incloses a space in whichpaving material 5 of any nature is filled. It is not necessary that thebase be of uniform thickness throughout its extent and, as indicated,the lower side of the base is hollow thereby enabling the same to beconstructed of a minimum amount of metal.

The bed upon which the roadway is constructed may be of any formationand, inasmuch as the invention is illustrated in connection with aroadway provided with a cartrack, the bed is shown as consisting ofcross ties 6 which are placed upon a properly prepared and gradedsurface, such ties receiving the rails 7 comprising the track andfurthermore supporting the several sections comprising the base. Theedges of the sections comprising the base and bordering upon the rails 7are made to conform to the outline of `such rails, as indicated mostclearly in Fig. 1. It will thus be understood that, should occasionrequire, any one of the sections may be removed or replaced withoutmaking it necessary to disturb the rails 7. The middle section l is ofgreater transverse span than the side sections 2 and 3 and correspondsto the distance between the rails 7. The side sections 2 and 3 are of awidth corresponding to the amount of roadway to be maintained at thesides of a car-track. The roadway along each side of the track borderingupon the strips to be maintained by the car company may be of anyordinary construction, depending upon the nature of the pavementpreferred. In order that the side sections may be properly supported,certain ties 6 are of a length so as to project the full width below theside sections, as indicated most clearly in Fig. 2.

When constructing a roadway in accordance with the invention, the baseis placed in position, after which the space inclosed by the upstandingrim or flange 4 is filled with paving material 5 such as concrete. Thepaving material may be of any thickness and the upper surface may bearched or flat. The paving material 5 serves to weight material 5 alsoserves to sustain the wear.

As indicated most clearly in Fig. l, the edge portions of the sectionsbordering upon the rails are constructed to overlap the fianges of therails and thereby assist materially in holding the rails in positionagainst vertical or lateral displacement.

It will be understood from the foregoing, taken in connection with theaccompanying drawings, that the invention provides a roadwayparticularly adapted for thorough: fares provided with street car-tracksand admits of a proper surface being maintained at a nominal cost, sincethe metal itself prevents the surface from sinking and preserves apractically level surface under all conditions and, moreover, thesurface is of such a nature as to admit of repairs to the track beingmade quickly and at a nominal cost.

`While it is preferred to construct the base of metal it is to beunderstood that such base may be formed of any suitable material andthat the upper side is formed with a recess to receive filling materialof any nature.

Having thus described the what is claimed as new is:

l. In roadway construction, a base having its upper surface providedwith a circumscribing rim or flange and having its lower side ma dehollow and thickened near its outer edges, and paving material filledinto the space defined by the circumscribing flange.

2. In a roadway provided with a car-track, a base supported upon the bedreceiving the rails of the track, said base embodying' a middle and sidesections of similar formation, the edge portions of the sectionsadjacent the rails conforming thereto and overlapping the base flangesof the rails, the several sections being formed upon their upper sideswith circumscribing flanges, and paving material filledinto the spacedefined by said flanges.

Inv testimony whereof I affix my signature.

invention,

EMMETT F. KAMMER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

